磷石膏预处理及制备建筑石膏的研究  

Study on the Pretreatment Technology and Preparing Construction Gypsum of Phosphogypsum

作　　者：刘路珍[1] 陈德玉[1] 刘宇浩[1] 刘元正[1] 赵黎 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,四川绵阳621010 [2]山西省建筑材料工业设计研究院,山西太原030009

出　　处：《非金属矿》2014年第3期30-32,共3页Non-Metallic Mines

摘　　要：采用水洗、筛分工艺对磷石膏进行预处理,通过TG-DTA、XRD、XRF等分析测试方法和物理性能检测,确定了磷石膏合理的脱水工艺参数:原状磷石膏的最佳脱水温度为170℃,时间为2 h;筛分和水洗磷石膏的最佳脱水温度为150℃,时间为2 h。采用此工艺制得相应磷建筑石膏并测试其相关性能,利用SEM对其水化产物进行微观分析。This test used the washing and screening process to pretreat the phosphogypsum. The optimum dehydration process parameters of phosphogypsum were determined by some analytic methods, such as TG-DTA, XRD, XRF. The best dehydration temperature of the original phosphogypsum was 170 ℃, the best time was 2 h; The best dehydration temperature of the washing and sreening phosphogypsum was 150 ℃, the best time is 2 h. Using this techology, we made gypsum for building from phosphogypsum, and tested its performance. Finally, we studied the microstructure by SEM.

关 键 词：磷石膏 预处理 杂质 脱水参数 性能 

分 类 号：TQ177.375[化学工程—硅酸盐工业]